<?php
function validateemail($email)
{ return eregi("^[_a-z0-9-]+(/.[_a-z0-9-]+)*@[a-z0-9-]+(/.[a-z0-9-]+)*(/.[a-z]{2,3})$", $email);
}
function validateurl($url)
{ return eregi("^((ht|f)tp://)((([a-z0-9-]+(/.[a-z0-9-]+)*(/.[a-z]{2,3}))|(([0-9]{1,3}/.){3}([0-9]{1,3})))((/|/?)[a-z0-9~#%&'_/+=:/?/.-]*)*)$", $url);
}
function converturls($text)
{ $text = eregi_replace("((ht|f)tp://www/.|www/.)([a-z0-9-]+(/.[a-z0-9-]+)*(/.[a-z]{2,3})((/|/?)[a-z0-9~#%&///'_/+=:/?/.-]*)*)", "http://www.//3", $text);
$text = eregi_replace("((ht|f)tp://)((([a-z0-9-]+(/.[a-z0-9-]+)*(/.[a-z]{2,3}))|(([0-9]{1,3}/.){3}([0-9]{1,3})))((/|/?)[a-z0-9~#%&'_/+=:/?/.-]*)*)", "<a href=/"//0/">//0</a>", $text);
return $text;
}
function convertmail($text)
{ $text = eregi_replace("([_a-z0-9-]+(/.[_a-z0-9-]+)*@[a-z0-9-]+(/.[a-z0-9-]+)*(/.[a-z]{2,3}))", "<a href='mailto://0'>//0</a>", $text);
return $text;
}
function convertalllinks($text)
{ $text = converturls($text);
$text = convertmail($text);
return $text;
}
?> ，欢迎访问网页设计爱好者web开发。
